packages feed

pandoc-3.10.1: test/command/7623.md

```
% pandoc -t native
[link $(0,1]$](url)
^D
[ Para
    [ Link
        ( "" , [] , [] )
        [ Str "link" , Space , Math InlineMath "(0,1]" ]
        ( "url" , "" )
    ]
]
```